Red River

Also called Red River of the South. a river in the S central US, flowing east from N Texas through Arkansas into the Mississippi in Louisiana. Length: 1639 km (1018 miles)

2.

a river in the northern US, flowing north as the border between North Dakota and Minnesota and into Lake Winnipeg, Canada. Length: 515 km (320 miles)

3.

a river in SE Asia, rising in SW China in Yunnan province and flowing southeast across N Vietnam to the Gulf of Tongkin: the chief river of N Vietnam, with an extensive delta. Length: 500 km (310 miles) Vietnamese name Song Koi